Environmental conditions have an important impact on the quality and reliability of various products, especially military equipment. Various military equipment, military vehicles, ammunition, ground explosive equipment and other military equipment have a very important operational mission in modern warfare. They have experienced production, packaging, transportation, loading, unloading, storage, deployment (withdrawal) and storage. A variety of complex natural environments and induced environments. This special use environment and use requirements put forward more stringent requirements on environmental adaptability and environmental reliability. The dust environment is an important environmental factor that causes many military weapons and equipment, including helicopter failure. The widely distributed sand and dust environment has a serious impact on military equipment and helicopter components, systems and airborne equipment. The main types of damage are: erosion, wear, corrosion and penetration. Under natural wind and rotor-induced washing air, the dust carried by strong winds can wear the moving parts and fixed surfaces of the aircraft. Angled particles can penetrate equipment such as cracks, cracks, bearings, seals, and various electrical connections. Beijing Yashilin Testing Equipment Co., Ltd. is a well-known manufacturer specializing in environmental testing equipment such as sand dust test chamber, dustproof test box and sand dust test equipment. The Ancient Egyptians were known for their creation of cosmetics, particularly their use of rouge. Ancient Egyptian pictographs show men and women wearing lip and cheek rouge. They blended fat with red ochre to create a stain that was red in color. Blush & Bronzers,Face Powder,Blusher Powder,Bronzers Powder HENAN BON INDUSTRIAL(COSMETIC) CO.,LTD , https://www.boncosmetic.com
Greek men and women eventually mimicked the look, using crushed mulberries, red beet juice, crushed strawberries, or red amaranth to create a paste. Those who wore makeup were viewed as wealthy and it symbolized status because cosmetics were costly.
In China, Rouge was used as early as the Shang Dynasty. It was made from the extracted juice of leaves from red and blue flowers. Some people added bovine pulp and pig pancreas to make the product denser. Women would wear the heavy rouge on their cheeks and lips. In Chinese culture, red symbolizes good luck and happiness to those who wear the color.
In Ancient Rome, men and women would create rouge using lead II,Iv (red lead) and cinnabar. The mixture was found to have caused cancer, dementia, and eventually death.
In the 16th century in Europe, women and men would use white powder to lighten their faces. Commonly women would add heavy rouge to their cheeks in addition.